Origins Space Telescope: trades and decisions leading to the baseline mission concept

Origins Space Telescope: trades and decisions leading to the baseline mission concept
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起源太空望远镜:导致基线任务概念的交易和决策

DOI:
10.1117/1.jatis.7.1.011014
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发表时间:
2021
期刊:
and Systems
影响因子:
--
通讯作者:
Bergin, Edward
Bergin, Edward
中科院分区:
--
文献类型:
--
作者:
Leisawitz, David;Amatucci, Edward;Allen, Lynn;Arenberg, Jonathan;Armus, Lee;Battersby, Cara;Bauer, James;Bell, Ray;Benford, Dominic;Bergin, Edward

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起源太空望远镜将追溯我们起源的历史,从尘埃和重元素永久改变宇宙景观到今天的生命。星系是如何从最早的星系演化到今天在宇宙中发现的星系的?宜居行星是如何形成的?有生命的世界有多普遍?我们描述了Origins是如何被设计来回答这些诱人的问题的。我们讨论了起源任务概念研究小组作出的关键决定,这些选择的理由,以及它们如何引导探索性设计过程形成起源基线任务概念。为了理解概念解空间,我们研究了两个不同的任务概念,并描述了第二个概念,旨在最大化每美元的科学并实现自我设定的成本目标。我们报告了研究方法,并描述了概念的演变。由此产生的基线设计包括一个直径5.9米的望远镜,低温冷却到4.5K,并配备了三台科学仪器。选定的架构类似于斯皮策太空望远镜,发射后只需要很少的部署。低温系统的设计利用了詹姆斯·韦伯太空望远镜的技术和经验。
The Origins Space Telescope will trace the history of our origins from the time dust and heavy elements permanently altered the cosmic landscape to present-day life. How did galaxies evolve from the earliest galactic systems to those found in the universe today? How do habitable planets form? How common are life-bearing worlds? We describe how Origins was designed to answer these alluring questions. We discuss the key decisions taken by the Origins mission concept study team, the rationale for those choices, and how they led through an exploratory design process to the Origins baseline mission concept. To understand the concept solution space, we studied two distinct mission concepts and descoped the second concept, aiming to maximize science per dollar and hit a self-imposed cost target. We report on the study approach and describe the concept evolution. The resulting baseline design includes a 5.9-m diameter telescope cryocooled to 4.5 K and equipped with three scientific instruments. The chosen architecture is similar to that of the Spitzer Space Telescope and requires very few deployments after launch. The cryo-thermal system design leverages James Webb Space Telescope technology and experience.
太空中千米基线远红外/亚毫米干涉仪
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